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COP9 Signalosome Network

  • Reference work entry
Molecular Biology

Part of the book series: The Plant Sciences ((PLANTSCI,volume 2))

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Introduction

The COP9 signalosome is a protein complex conserved in all eukaryotic organisms and initially isolated in plants as a repressor of light-dependent development.

Light plays an essential role in multiple aspects of plant development. Immediately after having emerged from the seed coat, seedlings must choose between two different developmental pathways, depending on the presence or absence of light: photomorhogenesis in the light or skotomorphogenesis in darkness. During photomorphogenesis, seedlings develop a short hypocotyl, and open, green, and enlarged cotyledons, in order to optimize light absorption. During skotomorphogenesis, seedlings develop an elongated hypocotyl, while cotyledons stay closed and unexpanded with an apical hook. In the late 1980s and the early 1990s, two genetic screens aimed at identifying novel components of light signal transduction and photomorphogenesis led to identification of a group of nine Arabidopsis thalianamutant loci that displayed a...

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Authors and Affiliations

  1. “Charles Darwin” Department of Biology and Biotechnology, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy

    Anna Franciosini & Giovanna Serino

  2. Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT, USA

    Xing-Wang Deng

Authors
  1. Anna Franciosini
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  2. Giovanna Serino
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  3. Xing-Wang Deng
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Corresponding author

Correspondence to Anna Franciosini .

Editor information

Editors and Affiliations

  1. Development and Cell Biology, Iowa State University, Ames, Iowa, USA

    Stephen H. Howell

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Franciosini, A., Serino, G., Deng, XW. (2014). COP9 Signalosome Network. In: Howell, S. (eds) Molecular Biology. The Plant Sciences, vol 2. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-7570-5_13

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